Plugable USB C SD Card Reader - Compatible with 2017 MacBook Pro, 12" Retina MacBook & More (Thunderbolt 3 Port Compatible, Supports SD, MMC, MS Cards) Add a blazing-fast card reader to your USB 3.1 Type-C (USB-C) Compatible with Late 2016 / 2017 / 2018 MacBook Pro, 12" Retina MacBook, Chromebook Pixel 2015, and virtually all USB-C and Thunderbolt 3 host PCs. NOTE: Mac ports are very tight, and may require additional force for full insertion. Supports All Common Secure Digital (SD), MultiMediaCard (MMC), and Memory Stick (MS) Card Types IMPORTANT NOTE: Supported out of the box by Mac-, Linux- and Windows Desktop or Laptop systems. Mobile plattforms however are more than likely not supported since most Android devices with USB-C ports *DO NOT SUPPORT* adding on mass storage devices (rooting/jailbraking is required for this functionality). Ask the device manufacturer if adding mass storage via USB-C port is possible before purchase. SD, SDHC, and SDXC cards are supported in UHS-I mode up to 104 MB/sec. Supports SDXC / MSXC Cards up to 2 TB in size. Note: Physical write-protect switch on SD cards not supported We love our Plugable products and hope you will too. All of our products are backed with a 1-year limited parts and labor warranty and Seattle-based email support. SD, SDHC, SDXC, MicroSD (Trans-Flash), MicroSDHC, and MicroSDXC cards are supported in UHS-I mode up to 104 MB/sec Memory Stick (MS), MS Pro, MS Duo, MS Pro Duo, HS MS, Micro-MS (M2) with adapter, MSPRO-HG Duo, MSPRO-HG Micro, MSXC Supports newer high-capacity cards: SDXC / MSXC Cards up to 2 TB in size MultiMediaCard (MMC), RSMMC, Mobile-MMC, MMCPlus, MMC-micro